On Fri, Oct 06, 2023 at 12:13:54PM +0200, Morten Brørup wrote:
> > From: Bruce Richardson [mailto:[email protected]]
> > Sent: Friday, 6 October 2023 11.45
> >
> > The event structure in DPDK is 16-bytes in size, and events are
> > regularly passed as parameters directly rather than being passed as
> > pointers. To help compiler optimize correctly, we can explicitly request
> > 16-byte alignment for events, which means that we should be able
> > to do aligned vector loads/stores (e.g. with SSE or Neon) when working
> > with those events.
> >
> > Signed-off-by: Bruce Richardson <[email protected]>
> > Acked-by: Morten Brørup <[email protected]>
> > Acked-by: Jerin Jacob <[email protected]>
> >
> > ---
>
> [...]
>
> > +_Static_assert(sizeof(struct rte_event) == 16, "Event structure size is
> > not 16-bytes in size");
>
> Thank you for adding this extra check. We should have more of these.
>
> NB: _Static_assert is deprecated in C23 [1], so for forward compatibility,
> you could use static_assert (which is available in <assert.h>) instead. Nice
> to have; feel free to ignore this comment.
>
Is the availability in assert.h backward compatible with C11, since the
link you posted seems to imply that "static_assert" is only from C23
onwards?
